12 MAIN CONTACTS TIMING CHANNELS ， 6PRE-INSERTION RESISTOR CONTACTS TIMING CHANNELS , 3 AUXILIARY CONTACTS TIMING CHANNELS , COIL CONTROL , 2COIL CURRENT MEASUREMENT CHANNELS, 2EXTERNAL TRIGGER CHANNELS, 2ANALOG INPUT CHANNELS , THERMAL PRINTER (BUILT-IN), “FIRST TRIP” TEST,BSG,RMO,DRM500A
Contact resistance, dynamic resistance, coil resistance, time test, displacement test, etc
